30results about How to "Avoid emulsification" patented technology

The invention relates to the technical field of chemical synthesis, and particularly provides a preparation method of a semaglutide side chain, which comprises the following steps: step S1, carrying out reaction on octadecanedioic acid mono-tert-butyl ester and trifluoroacetic acid pentafluorophenyl ester to generate a first intermediate; s2, enabling the first intermediate to react with 1-tert-butyl L-glutamic acid to generate a second intermediate; s3, enabling the second intermediate to react with pentafluorophenyl trifluoroacetate to generate a third intermediate; and S4, carrying out an amidation reaction on the third intermediate and 17-amino-10-oxo-3, 6, 12, 15-tetraoxa-9-aza-heptadecanoic acid, so as to generate a semaglutide side chain, and carrying out an amidation reaction on the third intermediate and 17-amino-10-oxo-3, 6, 12, 15-tetraoxa-9-aza-heptadecanoic acid. According to the preparation method disclosed by the embodiment of the invention, the pentafluorophenyl trifluoroacetate is used as the condensation reagent for two times to activate the carboxylic acid, and the amidation reaction is carried out for two times to construct the amido bond after each activation, so that compared with the traditional carbodiimide and urea positive ion type condensation reagent, the chiral racemization in the condensation process can be effectively avoided, and the yield of the product is improved. The condensation chiral racemization impurity can be lower than 0.3%.

The invention provides a pretreatment method for smelting separation of ionic rare earth ore, which comprises the following steps of: crushing rare earth enrichment, performing size mixing, performing acid dissolution, and then performing first solid-liquid separation to obtain first filter residue and pickle liquor; mixing and reacting the obtained pickle liquor with magnesium oxide slurry, and then carrying out second solid-liquid separation to obtain second filter residues and rare earth feed liquid; and extracting or precipitating the obtained rare earth feed liquid to obtain a rare earth carbonate product. According to the method, the rare earth enrichment is pretreated to separate and extract rare earth elements, the rare earth recovery rate reaches 97.3% or above, the rare earth loss is small, the obtained product can be directly used for smelting separation of rare earth products, the efficiency of the whole process for mining and utilizing the ionic rare earth ore is improved, and the economic benefit is increased. Meanwhile, magnesium and aluminum impurity elements are subjected to resource utilization and solid waste residue reduction, the process cost is reduced, and the economy of rare earth ore development is improved.

The invention relates to the technical field of air compressors, in particular to a screw air compressor device which comprises a motor and a motor shell, a motor rotor and a motor stator are coaxially arranged in the motor shell, both the motor rotor and the motor stator are filled with sealant, and an oil inlet is formed in the motor shell; the screw machine comprises a supporting shell, the supporting shell is fixedly arranged at the end, away from the oil inlet, of the motor shell, the supporting shell communicates with the motor shell, a screw is rotationally arranged in the supporting shell, one end of the screw is in transmission connection with the motor rotor, and an inlet and an outlet are formed in the supporting shell; the oil-gas separation barrel is communicated with the outlet; and one end of the oil cooling assembly communicates with the oil-gas separation barrel, and the other end of the oil cooling assembly communicates with the oil inlet. The manufacturing cost and the maintenance cost can be reduced, the cooling efficiency of the motor is improved, and meanwhile the emulsification phenomenon caused by supercooling of the oil gas barrel is prevented.

The application discloses an easy-to-clean oil-proof PC plate coating structure, which comprises an inner supporting piece one, a plate piece one, a connecting piece, a screw rod, a plate piece two and an inner supporting piece two, the plate piece one and the plate piece two are respectively injection molded on the inner supporting piece one and the inner supporting piece two through a plastic-iron wrapping process, the overall structural strength of the PC plate can be improved, the labor cost in the assembling process is saved, the connecting piece is arranged to achieve the connection and installation of the upper and lower two parts, the connecting piece is independently designed from the plate piece one and the plate piece two, the mold opening cost of the forming mold of the plate piece one and the plate piece two can be reduced, the production and manufacturing cost is lowered, the outer side end surfaces of the plate main body two are coated with oil-repellent coatings, the oil ink can be effectively prevented from adhering to the surfaces, the oil ink emulsification is prevented, and the cleaning is facilitated, when cleaning is needed, the plate piece two and the inner supporting piece two can be integrally detached by unscrewing the screw rod, and the scraper structure can be conveniently cleaned and maintained.

This utility model discloses a wall-scraping stirring device for solid-liquid extraction, including a stirring tank. A driving mechanism is mounted on the upper surface of the stirring tank, and a stirring shaft connected to the driving mechanism is rotatably mounted inside the tank. Several sets of main stirring blades are evenly arranged on the stirring shaft. A groove is formed on the side surface of each main stirring blade, and a T-shaped movable plate is slidably mounted within the groove. A scraper is mounted on the side surface of the movable plate, contacting the inner wall of the stirring tank. By setting the movable plate and scraper on the main stirring blades, the hard deposit layer formed on the inner wall of the stirring tank is scraped away while stirring, preventing deposit scaling and maintaining an effective mass transfer area. The staggered arrangement of the main stirring blades generates an axial-radial composite flow, eliminating low-speed dead zones. While scraping the wall, the scraper rapidly pushes the high-concentration slurry on the wall surface to the mainstream zone, disrupting the boundary layer concentration gradient and preventing emulsification caused by local concentration gradient imbalance, thus improving the rare earth recovery rate.

The invention discloses a method for determining formaldehyde in a water-based adhesive for cigarettes, which belongs to the technical field of formaldehyde determination, and comprises the following steps: sample pretreatment: adding a water-based adhesive to be determined into an outer tube of a direct extraction sample introduction bottle, adding water, uniformly shaking and dispersing, then adding a derivatization reagent solution, carrying out vortex uniform mixing, then carrying out ultrasonic extraction, and simultaneously carrying out formaldehyde extraction and derivatization reaction, a to-be-detected sample is directly obtained after the inner tube is pressed down; and performing liquid chromatographic analysis: directly loading the sample to be detected on a machine for sample detection. According to the method, extraction and derivatization reaction of formaldehyde in the water-based adhesive are carried out at the same time, traditional centrifugation, filtration and solution transfer are not needed, jelly emulsification generated after acetonitrile is directly added into the water-based adhesive is avoided, the use amount of toxic 2, 4-dinitrophenylhydrazine serving as a common derivatization reagent is reduced, meanwhile, complete derivatization reaction of formaldehyde is ensured, and the yield of the water-based adhesive is increased. The sample pretreatment process is simplified, and the detection efficiency is improved.

The utility model discloses a novel oil gas separation nitrogen gas double cylinder adjustable damping structure, including outer oil cylinder, inner oil cylinder and nitrogen tank, be equipped with main piston and telescopic piston rod in the inner oil cylinder, the outer oil cylinder is sleeved in the outer portion of inner oil cylinder, and is equipped with buffer oil cavity at intervals, and one end of outer oil cylinder and inner oil cylinder is closedly connected, and the other end is equipped with the sealing guide assembly with guide channel, and telescopic piston rod is movably connected with inner oil cylinder through sealing guide assembly, and the welding connection pipe fitting is fixed with the hole of outer oil cylinder side wall, and nitrogen tank is communicated with buffer oil cavity through welding connection pipe fitting, and nitrogen tank is equipped with floating piston, and the tank is divided into first chamber and second chamber, and nitrogen tank end part is equipped with the inflation sealing end cover, and outer oil cylinder still is equipped with the damping adjusting assembly of intercommunication buffer oil cavity, the utility model discloses can effectively avoid the gas resistance and emulsification phenomenon of oil liquid, and the damping effect stability is good, and product service life is long, and the processing technology is simple, and the production and maintenance cost are low, and can adapt to different suspension needs.

The application discloses a kind of diene extraction process saponification fat removal methods, first to the crude diene raw material is pretreated to remove low-boiling component, then carry out low-temperature weak base pre-saponification break down gum and waxy, middle-temperature compound saponification removes grease and fatty acid ester impurity in depth, after constant temperature stationary stratification, utilize compound solvent and carry out multistage countercurrent extraction, again by washing, reduced pressure desolventization, vacuum drying and obtain finished product.The application is by grading temperature control, step by step, effectively avoids emulsification, impurity removal effect is good, finished product purity and material yield significantly improve, reagent and three waste emissions are reduced.The process can be used for batch production, and can be matched with automatic equipment to realize continuous operation, process adaptability is strong, suitable for industrial scale popularization and application.

The invention belongs to the technical field of deacidification of high-acid crude oil and distillate oil thereof, and particularly relates to application of a deep eutectic solvent in deacidification of crude oil and distillate oil thereof. The deep eutectic solvent provided by the invention comprises a hydrogen bond acceptor, a hydrogen bond donor and a cosolvent, the hydrogen bond acceptor comprises choline chloride and / or betaine, the hydrogen bond donor comprises one or more of p-ethylphenol, phenol, malic acid and maleic acid, and the cosolvent is water; the molar ratio of the hydrogen bond acceptor to the hydrogen bond donor is 1: (2-4). The deep eutectic solvent provided by the invention can efficiently remove naphthenic acid in crude oil and distillate oil, the deacidification rate can reach 90% or above, and the solvent can be recycled, is not easy to cause an emulsification phenomenon, and is environment-friendly. The method provided by the invention is simple to operate, convenient to use and suitable for deacidification treatment of high-acid crude oil and distillate oil thereof.

The present invention belongs to the technical field of nanomolecular film preparation, and specifically relates to a method for extracting a molecular film, wherein a connecting plate and a motor are installed on the top of the inner cylinder, and the output end of the motor is connected to a transmission rod, the motor is connected to a stirring assembly through the transmission rod, a tilting assembly is installed at the bottom of the stirring assembly, an arc-shaped slide groove is installed at the bottom of the inner cylinder, an annular groove is installed on the side wall of the inner cylinder, the arc-shaped slide groove is connected to the annular groove, and the tilting assembly is located inside the arc-shaped slide groove for sliding. The present invention drives the tilting assembly to slide by moving the stirring assembly downward, so that the center of gravity of the inner cylinder moves from the bottom of the inner cylinder to the side wall of the inner cylinder, so that it tilts, and at this time the motor can simultaneously stir and oscillate the compounds inside the inner cylinder through the stirring assembly and the tilting assembly, thereby improving the dissolution efficiency of the compounds, and at the same time the tilting assembly can drive the inner cylinder to shake in a circle with the bottom as the center while sliding along the annular groove, so that the mixture inside the inner cylinder is pre-stratified, and the subsequent static stratification time is reduced.

The present invention relates to the technical field of enzymatic extraction of functional peptides, and more particularly to a method and application thereof for extracting hypoglycemic active peptides from sheep bones, S1: bone residue is prepared; S2: bone powder is prepared; S3: first defatting treatment is carried out with a composite degreasing agent, and the composite degreasing agent is mixed by food-grade lipase and sodium glycocholate according to a mass ratio of 1: (0.1-0.15); S4: second defatting treatment is carried out with anhydrous ethanol; S5: enzymolysis treatment is carried out to the obtained defatted bone powder B in sequence by the first protease and the second protease, and the first protease is collagenase, and the second composite protease is mixed by aminopeptidase and serine protease according to a mass ratio of 1: (1-3); S6: after the obtained active peptide suspension is de-enzymed, centrifuged and freeze-dried, hypoglycemic active peptides are obtained. The present invention uses sheep bones as raw materials for the first time, and is efficiently extracted with small molecule hypoglycemic active peptides through secondary defatting and two protease segmented enzymolysis treatments.

The utility model discloses a kind of grinding oil filter based on hierarchical filtration and collaborative linkage composite system, the utility model relates to grinding oil filter processing technical field, the utility model, including: primary filter device, the top of the primary filter device is fixedly connected with intermediate processing device by bolt, the top of the primary filter device is fixedly connected with multistage precision filter by bolt;By setting vacuum paper tape filter and filter paper cooperation, utilize low flow rate, high vacuum degree forms deep filtration, high -efficiently removes large particle impurity, greatly reduces solid content, reduces subsequent processing load, prolongs the life of precision filter element, intermediate processing device is cooperated by oil-gas separation type vacuum tank, heater and vacuum pump, dehydration and degassing, avoid oil emulsification and oxidation metamorphism, improve oil stability, multistage precision filter ensures that final oil cleanliness reaches NAS6 level, satisfies the purpose of high-precision grinding demand.

The present invention provides a method and system for treating waste gas containing volatile organic compounds. After the waste gas containing volatile organic compounds is pretreated, the pretreatment includes, for example, filtering, heat exchange cooling, water washing, alkali washing and cooling, and then contacting with a metal salt solution, and the waste gas is absorbed and treated with an organic solvent capable of absorbing volatile organic compounds to obtain waste gas containing very low volatile organic compounds. The waste gas containing very low volatile organic compounds is optionally sent to an adsorption tower or a thermal incinerator or a catalytic oxidation furnace equipped with an adsorption material for treatment, and the volatile organic compounds therein are further removed, and the volatile organic content of the treated waste gas is further reduced. Since the use of metal salts can control the moisture in the waste gas at a reasonable level, the removal of VOCs by the organic solvent is stabilized; since the volatile organic compounds in the waste gas are treated by solvent absorption, the load of treating volatile organic compounds is reduced.

The invention relates to asphalt stirring equipment, and relates to the field of asphalt stirring processing devices. The device comprises a supporting piece, a stirring piece, a preheating piece and a mixing piece, the supporting piece comprises a supporting frame, a first rotating frame and a second rotating frame, the first rotating frame and the second rotating frame are symmetrically arranged above the supporting frame, the stirring piece comprises a stirring barrel, and the stirring barrel is horizontally arranged above the supporting frame; and the stirring barrel is horizontally and rotatably connected into the first rotating frame and the second rotating frame, the feeding end of the stirring barrel communicates with and is fixedly provided with a preheating part, and the preheating part is used for preheating the asphalt material. Through the distributed arrangement and reverse rotation design of the stirring ring pieces, the stirring strength is uniformly distributed in the radial direction, the linear speed of the stirring ring pieces and the linear speed of the annular stirring racks form difference value complementation, the shearing force deviation of materials at any radial position is achieved, the asphalt emulsification phenomenon is effectively avoided, and the pavement problem caused by uneven mixing is solved.

The invention discloses a preparation method of fatty alcohol potassium phosphate with high monoester content, which comprises the following steps: esterifying fatty alcohol by using polyphosphoric acid as a phosphorylation reagent, dissolving by using a mixed organic solvent consisting of an oxygen-containing polar solvent and a non-polar solvent, washing with water, dropwise adding a potassium hydroxide solution, and reacting to obtain the fatty alcohol potassium phosphate with high monoester content. The high-quality fatty alcohol potassium phosphate can be obtained. According to the fatty alcohol potassium phosphate product obtained through the preparation method, the residual amount of phosphoric acid is lower than 500 ppm, the residual amount of fatty alcohol is lower than 0.5%, and the preparation method is mild in reaction condition, short in reaction time, high in selectivity, high in conversion rate, environmentally friendly, easy to operate, simple in process route and easy to control.

The invention discloses a grease pretreatment reagent and application thereof, and belongs to the technical field of grease treatment. The grease pretreatment reagent comprises the following components: a surfactant with a mass concentration of 1.5-3.5%, a neutral salt with a mass concentration of 3-7%, and an alkaline substance with a molar concentration of 0.003-0.018 mol / L. The surfactant in the grease pretreatment reagent provided by the invention can separate part of phospholipid and protein in a grease sample and reduce emulsification of the grease sample; the neutral salt can further separate a large amount of part of phospholipid and protein in the grease sample; the alkaline substance can remove impurities such as fatty acid in the grease sample; through the synergistic effect of the components, the grease pretreatment reagent can reduce emulsification of a grease sample and remove impurities, so that the grease sample treated by the grease pretreatment reagent can meet the requirement of rapid detection of capsaicin in grease, and therefore, the grease pretreatment reagent has a relatively good application prospect.

The invention discloses a highly efficient volatile oil extraction device, belonging to the field of pharmaceutical and chemical equipment. The device mainly comprises an extraction tank (1), a condenser (2) and an oil-water separator (3). The extraction tank (1) is connected to the condenser (2) via a steam delivery pipe (4), and the condenser (2) is connected to a bell mouth (37) arranged in the middle of the oil-water separator (3) via a fragrance water delivery pipe (5). The device has a novel design, a unique structure, and is easy to operate. It can simultaneously extract and separate light oil and heavy oil, and can minimize the emulsification and oxidative polymerization of volatile oil, thereby increasing the yield of volatile oil and improving the quality of volatile oil. It also meets the requirements of pharmaceutical production quality management specifications while increasing production efficiency.

The embodiment of the invention relates to a railway vehicle secondary transverse damping adjustable oil pressure shock absorber device which comprises a shock absorber body, a piston, a bottom valve, a working cylinder and an oil storage cavity are arranged in the shock absorber body, and unloading valves are arranged on the piston and the bottom valve; the valve block assembly comprises an electromagnetic valve, a damping valve and a valve seat; the controller is used for acquiring relative motion information of a vehicle body and a bogie and state information of the shock absorber body, and generating a control signal according to the relative motion information, the state information and a variable damping instruction after receiving the variable damping instruction of a vehicle main controller; the control signal is sent to the electromagnetic valve so as to control the electromagnetic valve to be switched on or switched off, hydraulic oil in the working cylinder flows when the electromagnetic valve is switched on or switched off, so that the damping valve is switched on or switched off, and the unloading valve is automatically switched on when the actual damping force reaches the unloading force.

The utility model relates to the technical field of extraction separation, especially, it is a kind of continuous extraction tower system, including extraction tower, pipeline mixer, metering pump and liquid storage tank;Its characterized in that: the extraction tower includes base and tower body, the tower body is sequentially arranged as clarification section, extraction separation section, settling section from top to bottom and is connected between each section by flange;The bottom of settling section is connected with base, the base one side is equipped with heavy phase outlet, and the other side is equipped with exhaust port;The extraction separation section is equipped with filler layer and is equipped with mixed phase import and separation observation sight glass in side wall;The clarification section top is equipped with clarification vent and is equipped with light phase outlet and circular observation sight glass in side surface;The application adopts pipeline mixer accurate control two-phase mixing and emulsification degree, flange connection combined tower body is combined with grading treatment mode, and segmented maintenance is convenient and efficient;Pipeline mixer and the synergistic effect of permeable structured packing, inhibit intermediate layer, improve mass transfer separation efficiency.

The invention discloses a pretreatment method for detecting various veterinary drug residues in an animal-derived sample, and belongs to the technical field of drug residue determination. The problem that various veterinary drug residues cannot be detected by using the same pre-treated animal-derived sample and the like is solved. The invention discloses a pretreatment method for detecting various veterinary drug residues in an animal-derived sample. Comprising the following steps: weighing a to-be-detected animal-derived sample, adding an internal standard solution, uniformly mixing with the to-be-detected animal-derived sample, then adding an o-nitrobenzaldehyde solution and a hydrochloric acid solution for derivatization, adding water-saturated n-hexane and a reconstitution fluid to obtain a to-be-detected substance, and finally testing. The pretreatment method provided by the invention meets the requirement that nitrofuran drug metabolites and amido alcohol drugs can be simultaneously detected through one pretreatment process, and avoids the processes of repeated weighing, derivatization and extraction of animal-derived samples in the detection process; the requirement of large-batch detection of animal-derived samples is better met, and the detection efficiency is improved.

The invention relates to a method for preparing quercetin liposome, which comprises the following steps: (1) adding phospholipid, cholesterol, phospholipid polyethylene glycol and quercetin into ethanol, and dissolving to obtain an ethanol phase solution; (2) respectively pumping the ethanol phase solution obtained in the step (1) and pure water into a micro-fluidic chip from different channel inlets, and carrying out micro-mixing to obtain a quercetin liposome crude product; and (3) dialyzing the quercetin liposome crude product obtained in the step (2) by using an aqueous medium to obtain the quercetin liposome. The method avoids the use of harmful and expensive organic solvents such as trichloromethane and methanol. Compared with the existing preparation technology in the market, the preparation method disclosed by the invention is higher in safety, more environment-friendly, short in time consumption and more advantageous in production cost.

A cleaning machine automatic door device with an air blowing function comprises a rack, a cleaning tank body is arranged on the rack, an opening is formed in the cleaning tank body, guide rails are arranged on the two sides of the cleaning tank body respectively, the length direction of the guide rails is parallel to the length direction of the cleaning tank body, the guide rails are connected with an automatic door through sliding blocks, and the automatic door is located above the opening. A driving device is arranged on the rack, the power output end of the driving device is connected with the automatic door, the lower side of the automatic door is connected with a pipe frame, the pipe frame is composed of a plurality of pipelines, a plurality of nozzles are arranged on the lower side of the pipe frame at intervals, the nozzles are communicated with the pipelines, and the pipelines are connected with an air source through air pipes. After the cleaning machine cleans the workpiece, under the control action of the PLC, the pneumatic valve is opened, the gas source provides compressed gas, the compressed gas is sprayed out of the nozzle through the pipeline, and residual liquid on the workpiece is blown off, so that in the subsequent process, the liquid is prevented from entering the vacuum pump to emulsify lubricating oil in the vacuum pump, and the replacement cost of the lubricating oil is reduced.

The invention discloses a recovery device for lithium in lithium battery waste electrolyte, and relates to the technical field of centrifugal extraction, the recovery device comprises three supporting legs, an extraction tower is fixedly arranged at the tops of the three supporting legs, a top cover is fixedly arranged at the top of the extraction tower, and an adjusting mechanism is arranged at the top of the top cover. Through the arrangement of a third wedge-shaped block, an adjusting motor, a U-shaped sliding plate, a first conical block, an adjusting spring, a sliding block, an L-shaped adjusting rod and a second conical block, the centrifugal rotating speed is adaptively reduced along with temperature rising, the centrifugal shaft rotating speed is adjusted in cooperation, and it is guaranteed that the centrifugal rotating speed is reduced under the high-temperature environment condition; continuous temperature rise is avoided by reducing the rotating speed of the centrifugal shaft, the problem of internal extraction liquid emulsification caused by too high temperature of the extraction tower can be avoided while the centrifugal efficiency is guaranteed by increasing the centrifugal length of the centrifugal shaft, damage to the extraction tower caused by continuous temperature rise is avoided, the service life of the extraction tower is guaranteed, and the extraction tower is high in applicability and worthy of popularization.

The utility model relates to the technical field of bearing seat sealing, in particular to a drying machine riding wheel bearing seat sealing device which comprises a main shaft, a roller face is sleeved in the middle of the peripheral side wall of the main shaft, shaft rings are sleeved on the symmetrical positions of the two sides of the peripheral side wall of the main shaft with the roller face as the center, and oil seal rings are sleeved on the symmetrical positions of the two sides of the peripheral side wall of the main shaft with the roller face as the center. Bearing seats are detachably arranged on the symmetrical positions of the two sides, with the roller face as the center, of the peripheral side wall of the main shaft in a sleeving mode, and the two bearing seats are located on the sides, away from the roller face, of the corresponding oil seal rings correspondingly. Lubricating water which penetrates through the shaft ring and still flows along the main shaft isolates a channel which continues to flow towards the bearing seat under the action of the oil seal rings on the two sides, so that the amount of the lubricating water which flows along the main shaft and enters the bearing seat is reduced to the maximum extent, the problem of lubricating grease emulsification caused by intervention of the lubricating water is avoided to the maximum extent, and the service life of the bearing seat is prolonged. Therefore, the lubricating effect of the lubricating grease on the bearing seat is ensured, the abrasion of the bearing seat is reduced, and the service life of the bearing seat is prolonged.

The present invention provides a pretreatment method for smelting and separating ionic rare earth ores, the pretreatment method comprising: crushing and slurrying rare earth enriched materials, acid dissolving, and then performing a first solid-liquid separation to obtain a first filter residue and an acid leaching solution; mixing the obtained acid leaching solution with a magnesium oxide slurry for reaction, and then performing a second solid-liquid separation to obtain a second filter residue and a rare earth feed liquid; extracting or precipitating the obtained rare earth feed liquid to obtain a rare earth carbonate product. The method provided by the present invention pre-treats and separates rare earth enriched materials to extract rare earth elements, and the rare earth recovery rate reaches more than 97.3%, the rare earth loss is small, and the obtained product can be directly used for the smelting and separation of rare earth products, which improves the efficiency of the overall process of mining and utilization of ionic rare earth ores, and at the same time realizes resource utilization of magnesium and aluminum impurity elements and reduces solid waste residue, reduces process costs, and improves the economic efficiency of rare earth mine development.

The invention discloses a design method of a floating oil collector and the floating oil collector, and the design method comprises the following steps: judging whether floating oil is a dispersed phase or a continuous phase, and judging the type of a flow state; determining the inner length and the inner height of the collector; analyzing internal flow field characteristics of the collector, performing numerical simulation, and establishing a numerical calculation model capable of describing the internal flow field characteristics of the collector; from the outlet separation efficiency, different inlet shapes are subjected to analog calculation, and the inlet shape of the collector is selected. The obtained floating oil collector comprises a collector inlet, a collector cavity and a collector outlet, the collector inlet is formed in one side of the collector cavity, the collector outlet is formed in the top of the collector cavity, the section of the collector inlet is a semicircular section or a rectangular section or a circular-groove-shaped section, and the collector cavity is of a streamline structure. According to the invention, the pressure distribution is effectively optimized, the emulsification risk is reduced, the dynamic separation efficiency and quality are improved, the stability and durability of equipment are enhanced, and the maintenance demand and the operation cost are reduced.

The utility model discloses a resin reaction liquid comprehensive washing device relates to resin washing equipment technical field. Its structure includes several centrifugal extractor, detergent supply main pipe, detergent recovery main pipe, several detergent recovery reaction tank, resin reaction liquid input pipe, resin cleaning output pipe, and centrifugal extractor bottom both sides are equipped with first liquid inlet and second liquid inlet, and centrifugal extractor top both sides are equipped with heavy phase outlet and light phase outlet, and several centrifugal extractors all are linked with detergent supply main pipe and detergent recovery main pipe. The utility model discloses a resin reaction liquid comprehensive washing device relates to resin washing equipment technical field. Its structure includes several centrifugal extractor, detergent supply main pipe, detergent recovery main pipe, several detergent recovery reaction tank, resin reaction liquid input pipe, resin cleaning output pipe, and centrifugal extractor bottom both sides are equipped with first liquid inlet and second liquid inlet, and centrifugal extractor top both sides are equipped with heavy phase outlet and light phase outlet, and several centrifugal extractors all are linked with detergent supply main pipe and detergent recovery main pipe. The utility model discloses a resin reaction liquid comprehensive washing device relates to resin washing equipment technical field. Its structure includes several centrifugal extractor, detergent supply main pipe, detergent recovery main pipe, several detergent recovery reaction tank, resin reaction liquid input pipe, resin cleaning output pipe, and centrifugal extractor bottom both sides is equipped with first liquid inlet and second liquid inlet, and centrifugal extractor top both sides are equipped and are connected with heavy phase outlet and liquid inlet directly through light phase outlet, and reduce secondary pollution risk.

The invention discloses a precipitation system and a precipitation method for rare earth compounds, and relates to the technical field of rare earth resource recovery. The system comprises a dissolving device, a precipitation device, a crystal grain forming device, a static stratification device, a centrifugal dehydration device, a water preparation chamber, a static recovery pool and a control system. By adding a separate crystal grain forming process, high-quality precipitation is facilitated, washing and filtering are easy, and the washing of product chloride ions is facilitated, and the quality is stabilized; the feeding and crystal nucleus growth are more coordinated, and the emulsification phenomenon is effectively solved, and the crystal nucleus material can be automatically returned according to the process requirements; the water preparation chamber is provided, and linkage control is performed for secondary washing, water is saved, and the disadvantage of large washing water consumption is solved; the electric control is reasonable, the dehydration and washing are linked, and the operation is convenient; the whole production process is continuous and smooth, the operation is more simplified, the cost is saved, the energy consumption is reduced, the labor productivity is improved, and the yield is significantly improved.

The application discloses a differential pressure fracturing pump plunger sealing device and relates to the technical field of fracturing pump plunger sealing. The application aims to solve the problem that the sealing mode of reducing the pressure difference by using the size end area ratio of the differential pressure plunger is limited in use range and is difficult to meet the adaptation to different pressure injection conditions. The application comprises a pump head, a plunger, a primary sealing assembly, a secondary sealing assembly, a primary pressure cap and a secondary pressure cap. An annular space is formed between the primary pressure cap and the pump head. A differential pressure hole is further formed in the pump head and is communicated with a plunger cavity in the pump head. A differential pressure assembly is arranged in the differential pressure hole. The differential pressure hole is communicated with the annular space. A differential pressure sleeve of the differential pressure assembly is provided with a differential pressure column. A counter hole is formed in the top end of the differential pressure column. A threaded hole is formed in a gland corresponding to the counter hole. A counter column is threadedly connected in the threaded hole. The bottom end of the counter column is inserted into the corresponding counter hole.

The invention relates to an animal fat extraction method and device and relates to the technical field of fat extraction.The animal fat extraction method comprises the steps of pretreatment, enzymolysis, water removal and separation.By means of the animal fat extraction method and device, it can be effectively avoided that the activity of animal fat compound enzyme is reduced after enzymolysis is conducted for a period of time, and the animal fat extraction efficiency is improved. The grease yield is improved, the oxidation of the grease can be delayed, and the grease is not easy to deteriorate.